Glass constitutes 3 percent of the solid waste produced in Metro Manila. Unlike paper, glass jars and bottles can be recycled over and over again. The glass does not wear out.

How to prepare for recycling:

Remove the lids or caps of glass jars and bottles and rinse them with water. Segregate them by color. Not all glass products are recyclable. Do not mix light bulbs, ceramics, glass mirrors, windowpanes, and dishes with glass jars and bottles as they are not made of the same materials.

How it is recycled:

Used glass is melted, formed and annealed to make new glass.

Products:

Used glass is made into new glass jars and bottles or into other glass products such as fiberglass insulation.

What is saved:

Recycled glass uses 40 percent less energy than making products from all new materials. It saves energy because crushed glass, called cullet, melts at a lower temperature than the raw materials (sand, soda ash, and limestone) used to make new glass.

source: http://www.taoshelter.tao-pilipinas.org